Using Curl for fast downloads

This is nice, although I am rarely waiting on downloads these days.
From here.

For example, suppose you want to download the Mandrake 8.0 ISO from the following three locations:
url1=http://ftp.eecs.umich.edu/pub/linux/mandrake/iso/Mandrake80-inst.iso
url2=http://ftp.rpmfind.net/linux/Mandrake/iso/Mandrake80-inst.iso
url3=http://ftp.wayne.edu/linux/mandrake/iso/Mandrake80-inst.iso

The length of the file is 677281792, so initiate three simultaneous downloads using curl's "--range" option:
bash$ curl -r 0-199999999 -o mdk-iso.part1 $url1 &
bash$ curl -r 200000000-399999999 -o mdk-iso.part2 $url2 &
bash$ curl -r 400000000- -o mdk-iso.part3 $url3 &